OutputCache Flush Cache through an Action in an MVC 3 Application

Question

In many actions from the MVC application we are building up, we use OutputCache as follows:

[OutputCache(Duration = 3600, VaryByCustom = "language")]
public ActionResult SomeAction()
{
   //Action..
}

So, I want to have an action where I can flush manually all these caches:

  public ActionResult RefrescarCache()
        {
            var keys = HttpContext.Cache.Cast<DictionaryEntry>().ToList();

            keys.ForEach(k => HttpContext.Cache.Remove(k.Key.ToString()));
            ViewBag.operationResult= "The cache was flushed succesfully!";

            return View();
        }

The thing, that it seems to not work. I will aprecciate any idea or advice you have!

score 2 · Answer 1 · answered Sep 16 '11 at 15:55

2

We've had the same problem and the only solution which was working was with:

HttpResponse.RemoveOutputCacheItem(url)

like Giedrius already mentioned.

answered Sep 16 '11 at 15:55

Dirk von Grünigen

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Is there any way to do it for all the urls ? – Pato Sep 16 '11 at 17:35
Are the cached urls saved in an array/object someplace? – ganders Apr 18 '14 at 13:07
Guess we'll never know – Denny Nov 01 '17 at 13:36

score 1 · Accepted Answer · answered Sep 16 '11 at 14:28

1

You should look here: http://msdn.microsoft.com/en-us/library/system.web.httpresponse.removeoutputcacheitem.aspx

answered Sep 16 '11 at 14:28

Giedrius

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It seems to be specific for only one url, is there any way to do it for all? – Pato Sep 16 '11 at 17:36
I'm tearing my hair out with this one... RemoveOutputCacheItem is appallingly basic – Dave Lawrence Jun 25 '13 at 15:23
I guess we'll never know – Denny Nov 01 '17 at 13:37

score 0 · Answer 3 · edited May 23 '17 at 10:26

Since everyone is asking for a way to clear the all the url´s...

I can think of two ways:

1- painfull but easy, maintain an array of virtual paths to be clean.

foreach(string path in myArray){HttpResponse.RemoveOutputCacheItem(path); }

2- Uses reflection to get everything, example here: list OutputCache entry

I think this is dificult because it´s not ASP.NET caching the pages, but IIS (7+) kernel cache.

OutputCache Flush Cache through an Action in an MVC 3 Application

3 Answers3